Typewriter



July 13,1926. 1,592,516

C, BUCHMULLER TYPEWRITER Filed July 5, 1 2 Sheets-Sheet 1 July 13, 1926. 1,592,516

C. BUCHMULLER TYPEWRITER Filed July 5, 1924 2 Shoots-Sheet 2 Patented July 13,1926. 2 r 1,592,516

UNITED STATES v PATENT OFFICE.

CUB! roman, OI Gm, ABSIGNOB TO A E G' DEUTSOEE wnm,

' mmn-ensnnnscmr, Oil BERLIN, GERMANY.

TYPEWBITER inflection fled m a, 1924, semi in. 124,039, and in Germany a. as, ma.

' .My invention relates to typewriters and chan for the well known recording telei more especially to mechanism for hfting grap havin a key board similar to that the carriage of typewriters in which the of the per orator. The recording telecarri is locked after having been lifted. raph writes small letters in one position and 5 Mec anism of this type, as heretofore defigures and points in the other. The key vised, comprises a key for lifting the car board is connected with-the types by elecriage, a second key for releasing the cartric means and the messages are printed on riage and allowing it to be-lowered so as a strip which must be cut and pasted on 55 to return to its normal position, and a a telegram form.

third key for spacing. As a rule this third A typewriter comprising the novel lifting key is re resented y a long spacing bar mechanism can be used without difliculty by arranged in front of the key board. operators trained to the key board of the In my improved 'mechanism a se arate perforator and messages received by means spacing key 1s dispensed with and t e ogof a head receiver, for instance, can be eration of spacing is performed by the li written on a telegram form exactly as in a ing and the releasing key, respectively. normal ty writer.

When the carriage is in its normal posi- In the rawings aflixed to this specification it is aced by'depressing the releasing tion and forming part thereof a mechakey. In t e lifted position the carriage is nism embodyin my invention is illustrated spaced b depressing the liftin ke This diagrammatica y by way of example.

y y key 1s free to return to its mltial position In the drawings after lifting theqcarriage without interfer- Fig. 1 isan isometric view of my improved once by the locking means. Con uently mechanism; the lifting key can be operated as o n as Figs. 2 and 3 are an axial section and a a desired for s acing while the carriage retransverse section on the line A -B in Fig.

mains locked in its lifted position. 2, res tively, of a resilient clutch connect- This is effected by operating the carriage ing t e shafts of the lifting and releasing liftin mechanism through the medium of keys w'th the spacing mechanism; an arm which is free to return to its initial igs. 4, 5, 7, and 8' are details of parts position with the lifting key leaving the of the clutch shown in Figs. 2 and 3;

carriage in lifted dposition. Fig. 4 is an isometric view of the spacing The H an releasing keys are conlever, and nected witht espacing mechanism by means Fig. 9-is a similar view of at pewriter adapted to transmit motion from the keysto provided with my improved mec the spacing mechanism, but not vice versa. -Referring to the drawings, on a hollow I prefer employing to this end spring-actushaft 6, which is rotatabl carried on a ated clutches the springs of which are weaker .solid shaft 0 in a frame I o the typewriter, than the pull bac springs which hold the there are fixed the lifting ke a, a lifting lift ng and releasing keys in their normal arm (I connected with a pull k ring a positions. and one half f of a resilient 0111? f, m. My improved mechanism offers the ad- The releasing key 9 a releasing arm h for vantage that a separate spacing key rerendering inoperative the locking pawl i of qnirmg being operated eve time the carthe lifting lever p and one half k of a secnage is lifted and return to its normal 0nd resilient clutch is, n are fixed on the solid osition, is dispensed I with altogether. shaft 0. The boss L of a spacing lever l, oreover, a typewrltenaccording to my in- (Fig. 2) on which are fixed the clutch halves vention can be substituted without any m and n with their springs r and a is loosely mounted on the shaft 0 between the halves f and k.

The lifting lever p is fulcrumed at o with frame I of the typewriter and provided with pins 9 and g for engagement with the lifting arm (1 and the pawl 71, respectively, and a pull back spring p. A link p conmeets the lever 72 with the carriage II of the typewriter. The means for transmitting the motion of the key a to the carriage II are well known in the art and are therefore not described and shown in detail.

The pawl 2' has the form of a three-armed lever fulcrumed at z" in the frame I of the typewriter and provided with a pull back spring 23. One arm of the pawli is formed with a hook adapted to engage the pin g of the lever 19; the other arm carries a pin 11" adapted to be engaged by the hook-shaped end of the releasing arm h.

The operation of this mechanism is as follows When the lifting key a is depressed, the lifting arm d on the hollow shaft 7) engages the pin 1 on the lifting lever 72, turning the lever on its fulcrum o and lifting the carriage II by means of the link p. When the carriage II is in its lifted position. the hook of pawl 2' engages the pin 9 of lever p and locks the latter so that the carriage is maintained in its lifted position. At the same time the spacing lever Z is actuated through the medium of the clutch half 7 fixed on the shaft 7), the spring and the second half m fixed on the boss L of the lever Z. Itwill be understood that the carriage is fed one space on being lifted. The movement of the lever Z is transmitted to the spacing mechanism by. any suitable means, for instance by an angle lever Z and a link Z", these means being also well known in the art and therefore not described and shown in detail.

While the carriage is in its lifted position, types can be written and the carriage can be spaced as often as desired by depressing the lifting key a. When the key a is so depressed, only the spacing lever Z will be operated by the clutch half 7 and will space the carriage, while the lifting arm d on the hollow shaft 6 does not act on the locked lifting lever p. After each operation the spring 6 returns the key a to its initial position.

If it is desired to return the carriage II to its normal osition, the releasing key 9 is operated. T is causes a downward movement of the arm h which is mounted on the same shaft 0 with the key 9, and rotation of the pawl i on its pivot 71' so that its hook releases the pin g of lever p, and the carriage returns to its normal position under the action of gravity. At the same time the spacing lever Z is actuated by means of the clutch half is and the springs and the carriage is fed one space. The movement of the coupling half is transmitted to the lower half 11. by the spring 8. As the halves n and m are rigidly secured on the boss of the spacing lever, the latter is actuated. Types can now be written or the carriage can be spaced by'depressing the key 9 as often as desired.

The pull back spring t of pawl 71 returns the key 9 to its normal position after it has been operated. The springs 7' and s of the couplings f, m and k, n are weaker than the pull back springs e and t in order to prevent operation of both keys when one of them is depressed I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

I claim 1. Typewriter comprising a carriage, means for lifting said carriage, means forlocking said lifting means, means for re leasing said lifting means, means for spacing said carriage, a key for operating said lifting means, another key for operating said releasing means, a spring connected with each key for returning it to inoperative position and means inserted between said keys and said spacing means for transmitting motion from said keys to said spacing means, said transmitting means being weaker than said springs.

2. Typewriter comprising a carria e, means for lifting said carriage, means or locking said lifting means, means for releasin said lifting means, means for spacing saidcarriage, a key for operating said lifting means, another key for operating said releasing means, a spring connected with each key for returning it to inoperative position and a spring-actuated clutch inserted between said keys and said spacing means for transmitting motion from said keys to said spacing means, said clutch being weaker than said springs.

3. Ty ewriter com rising a carriage, means or lifting sai carriage, means for locking said lifting means, means for releas ing said lifting means, means for spacmg said carriage, a key for operating said lifting means, another key for operating said releasing means, a shaft carrying said lift: ing key, another shaft carrying said releasing key and said releasing means and means inserted between said keys and'said spacing means for transmitting motion from said keys to said spacing means, while being inoperative in the reverse direction.

4. lypewriter comprising a carria e, means for lifting said carriage, means or locking said lifting means, a lifting arm adapted to act on said liftin means, a releasing arm adapted fdr'ren ering'iioperative said locking means, a spacing ever, clutch being fixed on the other shaft, the a shafthaving keyed to it said lifting key other halves ofsaid clutches being fixed on 10 and said liftin arm, another shaft having said boss and springs for returning said keys keyed to it sai releasing key and said reto inoperative position, said sprmgs being 5 leasing arm, said lifting key and the boss stronger than said clutches.

of said s acing lever be' loose on said Intestimony whereof I aflix my signature. other sha one half ofa spring clutch being fixed on, one, one half of another spring CURT BUCHMULLER. 

